go on the air—(also: come on the air)
1. (Radio, TV) begin broadcasting:
- The radio station went on the air shortly after the storm.
2. (of a program) be broadcast:
- Certain programs go on the air in the form of a mixture of live and recorded segments.
3. speak over the radio:
- I suppose you never know who is listening in when you go on the air.
walk on air—feel very happy or euphoric:
- I was walking on air the day I handed the manager the final check to settle our bill.
Note: The expression does not fully correlate in meaning with the phrase dance on air—
1. = walk on air:
- As you can probably imagine, when I received Melanie’s letter, I was dancing on air.
2. (sl.) die by hanging:
- For every night, from now until then, you will dance on air with a hempen rope around your neck.